Improvement in locks for safe-doors



UNITED STATES PATENT OFFICE.

DAVID O. PAIGE, OF DETROIT, MICHIGAN.

Specification forming part of Letters Patent No. 88,581, dated April 6, 1869.

and to the letters of reference marked thereon,

and being a part of this specification.

The nature of this invention relates to a new and novel construction of alock, or locks, for safe, vault, and other doors, `in such a manner that two, three, or more locks may be employed, each acting independently of the other, by means of which the door-bolts are allowed to advance and recede as may be .desired; and consists in a peculiar arrangement of bolts, gua-rds, tumblers, stops, and cranks, which I will now fully describe.

Figure l is a view of my combined triple lock attached to the door of a safe, showing the door locked, with all the lock-bolts turned, so that the door-bolts Vcannot bethrown. Fig. 2 is a similar View, with the central lock-bolt turned so that its recess allows the cam on the tumbler to enter it and the door-bolts to be withdrawn. Fig. 3 is a section of the same, withthe auxiliary lockbolt turned in a similar manner, preparatory to withdrawing the door-bolts. Fig. 4 is a similar section of the inside of the door, showing it opened by the auxiliary lock. Fig. 5 is asection of the front ot' the door. Fig. 6 is a bottom and side view of the slide. Fig. 7 is a plan view of the tumbler in the double lock. Fig. 8 is a plan view ot' the tumbler in the auxiliary lock. Fig. 9 shows the construction of the cranks which operate the tumblers.

Like letters indicate like parts in each iigure.

A, in the drawings, represent the bolts of a safe-door, attached to the'inner side thereof, and held in place by passing through suitable openings in the iian ges B of the door, while C are suitable connecting-bars, eXtendiu g across said bolts, to which they are rigidly secured at their points of intersection to secure a uniform movement of the bolts.

D and D are circular lock-bolts, provided with slots E, and rotate upon their own axes,

being actuated by means of the knobs F, through suitable gears, such as are employed in combination-locks, which knobs are on the outer side of the door.

The lock-bolts D and D vmay be either round and rotating upon their own axes, as shown, or the ordinary square bolt, shooting out from the lock.

Gr is a double-armed tumbler, providedwith cams H, one at the end of each arm, and with an oblong central arm, forming a head, g. WVithin this arm is formed an elliptical slot, J, having at its outer end a semicircnlar recess, j, as shown in Fig. 7.

A crank, L, Fig. 9, operated 'by the knob or key K, Fig. 5, is pivoted to the door and provided with a wrist pin, Z, which projects through the elliptical slot J, and operates the tumbler by its rotation therein, so that by turning the knob K in either direction when the door is locked, the pinl Z being in the recess j, as shown in Fig. 1, by turning either of the lock-bolts D so as to present its recess E to the cam H, and turning the" crank L in the proper direction, the tumbler is partially rotated, and its cam enters the recess in the lock-bolt. At the same time its head gis drawn away from the stop in the under side of the slide N, for the purpose herein after described.

C is a cross-bar, secured to and across the door-bolts A, as hereinbefore described, and is provided with a slot, M, within which the slide N plays backward and forward, :as may be necessary. This bar C' is also provided with another slot, O, nearly of a T shape, and

It often happens that, when burglars attempt to forcibly enter a safe whose door is provided with dial-locks, having stationary knobs similar to those shown at F, these knobs are broken in driving in, or attempting to drive in, thespindle with a punch, and the owner has no means of getting the proper relative positions of the knobs in the combination to open the safe. i A

Again, the locks may get out of order, and the owner be prevented from having access to the interior of the safe. In such cases I provide an auxiliary lock, which may be e111- ployed to throw the bolts and allow the door to be opened,but which lockis externally concealed. This lock is constructed upon the same general plan as are those already described, except that the spindle operating the circular gua-rd D does not project through to the front side of the door, and the aperture is filled in over it, either with an iron plug to represent a rivet or screw, or with putty, and painted and varnished, so that the door shall appear to be solid and unbroken at that point.

The outer end of the spindle has a square slot, P, Fig. 5, formed in it, or any similar ar- :rangement by which an attachment may be made, to receive a key, by which it may be rotated, and, through proper gearing in the lock, turn the lock-bolt D.

Q is a tumbler, oscillating upon a pin, R, and provided with acam, S, which enters the -recess E in the lock-bolt D when the latter is turned to the proper posit-ion.

A crank, X, (shown. in outline,) Whose spindle does not extend through the door, and operated by a key engaging with a slot in its outer end, (shown at T, Fig. 5,) moves the tumbler Q by means of its wrist V, operating in the semi-elliptic slot U of the tumbler. The spindle of the crank is externally concealed in the same manner as that ofthe lock-bolt D.

The slide N has a groove, n", in the under side of its upper end, into which projects the pin Won the end of the arm of the tumbler Q.

When the auxiliary lockis in its normal position, as shown in Figs. l and 2, the door-bolts may be thrown backward or forward, as this groove then permits of the free horizontal movement ofthe slide N and its connections; but when it becomes necessary to use the auxiliary lock, the tumbler Q being turned, the pin W on its arm lifts up the slide N in the slot M, disengaging its stop a from the head g of the tinnbler G, as shown in outline in Figs. 3 and 4.

The wrist W, projecting into the L-shaped slot Y iu the cross-bar C', when the tumbler Q is rotated by its proper key engaging with the cross-bar at the back of the slot, throws it and the door-bolts back, allowing the door to bev opened.

One of the two independent locks, whose bolts are shown atD, is intended for ordinary daily use, while the other is held in reserve for use in case of derangement or accident to the other, while the third or auxiliary lock is sto n and roove n snbstantiallv as and for the purposes set forth.

2. The double-armed tumbler G, provided with cams H and head g, with an elliptic slot, J, and recessj formed therein, and the crank L, with its wrist-pin Z, in connection with a pair of lock-bolts, D, or their equivalents, and operating substantially as'described, and for the purposes speciiied.

3. The tumbler Q, provided with cam S, pin W, and slot U, when constructed andoperating substantially as and for the purposes set forth.

4. In combination with the above-named parts, the crank X, having a slot, T, in the outer end ot its spindle, and the lock-bolt D', the outer end of whose spindle has a slot or recess,P, or their equivalents, when constructed, arranged, and operating substantially as described, and for the purpose specified.

DAVID o. PAIGE.

Witnesses:

H. F. EBERTS, L. C. HYDE. 

